HMS Trumpeter (D09) was a Ruler-class escort aircraft carrier operated by the Royal Navy during World War II, originally built as the USS Bastian (CVE-37), a Bogue-class escort carrier constructed by Seattle-Tacoma Shipbuilding in Tacoma, Washington. Laid down on 25 August 1942 and launched on 15 December 1942, she was transferred to the United Kingdom under the Lend-Lease program and commissioned into Royal Navy service on 4 August 1943. Design-wise, HMS Trumpeter was larger than earlier American escort carriers, with an overall length of 492 feet 3 inches (150.0 meters) and a beam of 69 feet 6 inches (21.2 meters). Her draught was 25 feet 6 inches (7.8 meters). Propulsion was provided by a steam turbine connected to two boilers and a single shaft, producing 9,350 brake horsepower, enabling her to reach a speed of 16.5 knots (30.6 km/h; 19.0 mph). The vessel's flight deck featured a small combined bridge and flight control on the starboard side, two aircraft lifts measuring 43 by 34 feet (13.1 by 10.4 meters), a single aircraft catapult, and nine arrestor wires. Her hangar, situated below the flight deck, measured 260 by 62 feet (79.2 by 18.9 meters) and housed her complement of up to twenty-four aircraft, which could include fighters like Hawker Sea Hurricanes and Vought F4U Corsairs, as well as anti-submarine aircraft such as Fairey Swordfish and Grumman Avengers. HMS Trumpeter's service history includes participation in notable operations, most significantly on 4 May 1945, when aircraft from her 846 Naval Air Squadron took part in Operation Judgement. This attack targeted a U-boat depot at Kilbotn, Norway, involving 44 aircraft, including Avengers and Wildcats, and resulted in the destruction of multiple vessels, including the depot ship "Black Watch" and the U-711 submarine. After the war, she was returned to U.S. custody on 6 April 1946, struck from the Naval Vessel Register on 19 June 1946, and subsequently sold into merchant service as Alblasserdijk, later renamed Irene Valmas. The vessel was ultimately scrapped in Spain in 1971. HMS Trumpeter's design and operational record exemplify the critical role of escort carriers in Allied maritime strategy, especially in anti-submarine warfare and supporting amphibious operations during World War II.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.